Quote verification

This proves the quote below is recorded by Citatio exactly as displayed and has not been altered since it was committed and anchored. It documents Citatio's crawl observation; it does not imply endorsement by the source platform. The quote links to the original review.

“Ich liebe es, wie die Häufigkeit der Karten variiert.”

Checks (re-run on this request)

• ✓ Signature — Ed25519 signature over the record hash, verified against the public key at /.well-known/citatio-signing.json
• ✓ Merkle inclusion — Leaf recomputed through the sibling path to the anchored root
• ✓ Public transparency log — Sigstore Rekor log index 2907673729

Proof data

Record hash (SHA-256)

c293c2a7044ff2c01774124f073b99751206c3e7156ad1ae26ed243ad798b756

Signature (Ed25519, base64)

qRkbwu84NhV5rXLV4Djwqpq2jSspgAsOWAHDsC63Xd2d2ebTcWKXcdbFP16G2694IwvLTXNBXX1D0H0aXl4LCg==

Merkle root

b9a08f9d6d76dd148110a496219c42cf3205c6f982800d84d5c85d77e9461e02

Merkle path

["c29073ead068ec23e84b53274e570d1cc338f16b01e4b4ab77a0abbf99a2537d","e4994de84e04ad909ed0144b68724ca01d0c16b01dd93cb5032c3fb6ceb7cf87","4cc1d53e4e81476a8f06340089c649b426d1c878df94bd6657d58deff896aaf8","46f39204b005836f0e48501e8779ad720fdbac4ceb05a790b8448d59b021167f","dae2427fb045cd8f40017d494dcecf6679209faa0b91e786385dbb75eaec248e","b81e7dedd42959e0d55b3d9b270e8c3c461d750e299d03dd4f1ea1663292fb19","8cf96d4999ec24eab69e7e6e0f729b7d528cdd19b50bc602ea5aece40af8a5b1","b7c2b689a22cc4b0d4ff30841000431a9257d0b14a95bb6e0a335162d73b4521","b0e17c6ec85087f19ab68508aed0fa2eb061d23719c9d0a5f1e1d9394db4931f","c13b74978a11b4b92ffacd68647f5e55e7dc77404ea9cedae4d2e04f1124de3e","d6d7ec5b8671612f1afda6d1c341da4ab277e6a515ef03b097a08ef2f21b6a1a","8e90fbff84453d26da9a25ba9530d677aecf62355e82abaefcef4642ecd6818d","ff0ce3b59f4b6fff6b806e01d20d764fb2b7a5651693c19ab4bf8a8b5ce5f968","05978e8b9ad5fd39833c65b8b951e8c80cf426334c441fa8a8bff8eb8eeaf534","4543e8b9ac7bd077d9526acfdae449f0a0d5517cbb42414f50ef930ecdb9470b"]

Anchored

2026-09-22

Public log entry

search.sigstore.dev, log index 2907673729 · entry 108e9186e8c5677a06ea…

Expected log hash

bf9a74000249ba6e66b1e29aae9d8cb95c3400dc118569a80e5c0949f3e8ac62 The log entry's spec.data.hash.value must equal this value: the SHA-256 of the Merkle root string above. Recompute it yourself from the root to confirm.

Canonical record

{"dataset_version":"v1789969984102","kind":"published-quote","locale":"de","page":"theme:vaia/ordering/de","quote":"Ich liebe es, wie die Häufigkeit der Karten variiert.","rating":4,"review_date":"2026-04-08","source":"Google Play","source_url":"https://play.google.com/store/apps/details?id=com.studysmarter","v":1}

Verify in the public log

1. Open the Rekor entry (pre-filled with this proof's log index).
2. In the entry, compare spec.data.hash.value with the "Expected log hash" above: it is the SHA-256 of the Merkle root string (b9a08f9d6d76…), which ties this proof's root to the log entry.
3. Decode spec.signature.publicKey.content from base64: it must equal Citatio's published key at /.well-known/citatio-signing.json.
4. The entry's integratedTime is the independent timestamp: the root, and with it this quote, existed no later than that moment.
5. Locally, without any Citatio infrastructure: SHA-256 the canonical record (must equal the record hash), verify the Ed25519 signature against the public key, and fold the hash through the Merkle path (sorted-pair SHA-256) to reach the anchored root.